Percussive Drilling

Drilling that supports the production cycle

Percussive drilling supports underground development and extraction through long-hole drill and blast, slot and inverse raises, V-30 drilling, cable bolt drilling and related production applications. We select the method around the opening, orebody, ground-support need and production objective.

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Our Approach

Holes planned for what happens next

We align drilling accuracy and method selection with the blast, opening or ground-support work the holes are intended to support.

Production Hole Patterns

Planned long-hole patterns prepare sections of rock for charging, blasting, fragmentation and extraction.

Openings and Support

Slot and inverse raises, V-30 work and cable bolt holes support other underground development and ground-support objectives.

What We Bring

Percussive Drilling capabilities

Our underground percussive work spans production drilling, mine openings and ground-support applications.

Long-Hole Drill and Blast

Long-hole drilling creates planned patterns for charging and blasting material for extraction.

Slot and Inverse Raises

Drill-and-blast holes can create openings from level to level in underground mines.

V-30 Drilling

The V-30 method creates a void and slot together as an alternative raise approach.

Cable Bolt Drilling

Up-holes are drilled for cable installation to provide structural support in underground openings.

From Hole to Production

The hole sets up what comes next

In long-hole production work, percussive drilling creates planned hole patterns for blasting. We manage placement, alignment and depth around the downstream objective so drilling supports fragmentation, extraction and production continuity.

Long-hole drilling, blasting, fragmentation and extraction sequence

The hole pattern and drilling execution set up the blast and the extraction work that follows.

Our Technical Expertise

Match the method to the underground objective

Percussive programs can use pneumatic or hydraulic down-the-hole and top-hammer methods. Selection depends on hole direction, opening, blast design, ground-support work and mine conditions.

Top Hammer and DTH

Top-hammer and down-the-hole options are selected around the hole pattern, ground conditions and required opening.

Active-Mine Execution

Drilling for production, openings and support is coordinated with the underground operating environment.

Our Experience

Percussive Drilling expertise

Our crews plan the hole pattern and method around the downstream underground work.

Percussive Drilling

Long-hole patterns for the drill-and-blast cycle.

Mine Openings

Slot, inverse-raise and V-30 approaches for opening development.

Ground Support

Cable bolt drilling and installation for underground support.

Projects

Project Highlights

See how Boart Longyear teams support mine projects in the field.

The 656 m hole reached the target in 39 12-hour shifts and intersected approximately 2.1 m from target center.

Paste Fill Hole Reaches 2,152 ft in a One-Shot Pass

At Paulsens Gold Mine, Boart Longyear drilled a 656 m paste fill hole in one pass, reaching the target in 39 shifts and intersecting within 2.1 m of center.

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DTFR Water-Well Drilling Reaches Target Depth With Less Than 1% Deviation

Boart Longyear used dual-tube flooded reverse circulation drilling in the Pilbara to complete large-diameter mine water wells while controlling circulation, discharge water and hole deviation.

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